Surge Protection - MOV Calculation || IEC61000-4-5

#MOVcalculation #SurgeProtection #surge #Varistor #IEC61000-4-5
In this video step by step procedure for MOV calculation explained.
#MOVdesign
#VaristorSelection
#Surge
#Mov
#varistor
This channel offers the mentorship program. Once you sign in for mentorship program you will get opportunity to interact with me directly for your Q&A through online consulting : 96$/month.
You can also schedule 1-1 meeting with me by paying just 19$/meeting.
Please do not raise access request if you have not joined LTspice Simulation Help Membership. The access of ltspice file will be given only to LTspice Simulation Help Members.
Link to Join LTspice Simulation Help Membership : / @electronicscircuithubech
Please do support us financially. Your small contribution and support will really help us to do more better towards our society. If you think this channel helping you along your professional career journey, kindly step up and support us. Indian resident can directly use this UPI ID : 8209827842. Non Indian resident can join membership or send Super thanks.
Thank You !

[@kuldeeprawat4758]

Sir pls make a video with calculation on Surge resistance(82E/6W), in the circuit we have use before mov for the impulse and surge test protection

[@ElectronicsCircuitHubECH]

I will make next video with Surge Resistor.

[@kuldeeprawat4758]

@@ElectronicsCircuitHubECH thanks sir ji

[@prahladsharma5937]

What is your RMS voltage values , because you didn't use that values in any calculation

[@hassanhussam2913]

sir thank you for your effort , Plz i want to ask you about 30Kv surge test is these calculations valid at this level (30Kv) and which MOV part number you recommend for such test

[@ElectronicsCircuitHubECH]

Hi...It's hard to reply without knowing exact application of your design and what all components you are using in your circuit. I would say probably you have to increase the MOV diameter to handle the more energy. so the (30KV-Vclamp)/2 = Current. So look at the MOV to handle this current. Also calculate the energy requirement so size the MOV. You can connect me in my number given in home page for more details. Thanks

[@ironchefhan1386]

it is very helpful. thanks.

[@ElectronicsCircuitHubECH]

You welcome

[@preetitiwari9765]

Keep up the good work !

[@ElectronicsCircuitHubECH]

Thanks, will do!

[@kuldeeprawat4758]

Thanks sir ji

[@sanjeevkolekar]

Hello sir. i want to design my 50W and 100W Power supply circuit. I want it to sustain 4KV Surge. What values of Fusible Reaistor and MOV should i Use

[@ElectronicsCircuitHubECH]

Hey Sanjeev, Thanks for asking very good question. I would not recommend to use wire wound resistor for 100W application. Better to use two or three NTC 10 Ohm in series. Also use 20mm dia MOV parts. Here is my recommendation. Mov - V1000LA160bp NTC - B57153S0100M000 Hope I answered your question.

[@kuldeeprawat4758]

Sir for 10 kV impulse test same calculation apply?

[@ElectronicsCircuitHubECH]

Let me check the calculation of Impulse. For now i do not have much idea in impulse.

[@s.m.mahedihassan9304]

❤

[@ElectronicsCircuitHubECH]

Hope you liked it. You can support this channel by sending super thanks for this video.

[@kuldeeprawat4758]

Sir as per iec standard 6kv impulse pr bi video banvo Thanks

[@ElectronicsCircuitHubECH]

Noted with thanks !

[@kuldeeprawat4758]

Sir surge test ke har strike ke bad me mov ke energy kam hoti jati h kya? For example- datasheet define 520J In the calculation we calculate 39.6J So after test = 520 - 39. 6 = 480.4J Is tarah last me energy zero ho jaygi kya sir? Or mov damage ho shakti h kya

[@ElectronicsCircuitHubECH]

Hey...let me try to answer your question. For sure every surge pulse there will be degradation in MOV surge energy. As you have seen this MOV will work upto 1000 surge pulse. Ex. One pulse energy is 39.6J so for 1000 pulse required 39.6J*1000=39600J which seems impossible value. The calculation shows energy used by MOV for single pulse.Lets say you are using 520J for single your MOV will get damage in single surge. No of pulses depend on Surge current and clamping voltage. MOV will degrade every surge pulse but not like you understood. For sure it will work untill 1000 strikes. I hope i was able to answer your doubts at some extent.

[@shahbaazahmad130]

Brother mere pass S20K385 Mov hai , aapke pass jaisa datasheet hai jisse aap surge striking operation calculation kar rahe ho waise, waisa hi datasheet mere ko datasheet download karna se wo sab parameters nhi show kar rha hai Aap bataiye us tarah ka datasheet Google me kahan se nikale hai aap

[@ElectronicsCircuitHubECH]

Hi...only premium members get technical assistant. Thanks

[@shahbaazahmad130]

What is the cost to join for premium membership

[@ElectronicsCircuitHubECH]

@@shahbaazahmad130 Pls check in channel homepage, it is very nominal and less.

[@shahbaazahmad130]

Brother how can I get any MOV datasheet

[@ElectronicsCircuitHubECH]

Google it.

[@shahbaazahmad130]

@@ElectronicsCircuitHubECH Thanks

[@DavidTPhan]

[@ElectronicsCircuitHubECH]

Thanks